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<Title>Surface Wireframe</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Surface Wireframe</p>
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<img src="images/surfacewireframe0.jpg" width='380' height='340'>&nbsp;&nbsp;<img src="images/surfacewireframe1.jpg" width='380' height='340'>&nbsp;&nbsp;<img src="images/surfacewireframe2.jpg" width='380' height='340'>&nbsp;&nbsp;<img src="images/surfacewireframe3.jpg" width='380' height='340'>&nbsp;&nbsp;<img src="images/surfacewireframe4.jpg" width='380' height='340'>&nbsp;&nbsp;<img src="images/surfacewireframe5.jpg" width='380' height='340'>
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This example demonstrates the rectangular and triangular wireframes of a surface at different interpolation levels, configured using <a href="SurfaceChart.setShadingMode.htm">SurfaceChart.setShadingMode</a> and <a href="SurfaceChart.setInterpolation.htm">SurfaceChart.setInterpolation</a>.
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/surfacewireframe.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%!
// Function to create the demo charts
void createChart(WebChartViewer viewer, int chartIndex)
{
    // The x and y coordinates of the grid
    double[] dataX = {-2, -1, 0, 1, 2};
    double[] dataY = {-2, -1, 0, 1, 2};

    // The values at the grid points. In this example, we will compute the values using the formula
    // z = square_root(15 - x * x - y * y).
    double[] dataZ = new double[dataX.length * dataY.length];
    for(int yIndex = 0; yIndex &lt; dataY.length; ++yIndex) {
        double y = dataY[yIndex];
        for(int xIndex = 0; xIndex &lt; dataX.length; ++xIndex) {
            double x = dataX[xIndex];
            dataZ[yIndex * dataX.length + xIndex] = Math.sqrt(15 - x * x - y * y);
        }
    }

    // Create a SurfaceChart object of size 380 x 340 pixels, with white (ffffff) background and
    // grey (888888) border.
    SurfaceChart c = new SurfaceChart(380, 340, 0xffffff, 0x888888);

    // Demonstrate various wireframes with and without interpolation
    if (chartIndex == 0) {
        // Original data without interpolation
        c.addTitle("5 x 5 Data Points\nStandard Shading", "Arial Bold", 12);
        c.setContourColor(0x80ffffff);
    } else if (chartIndex == 1) {
        // Original data, spline interpolated to 40 x 40 for smoothness
        c.addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nStandard Shading", "Arial Bold", 12);
        c.setContourColor(0x80ffffff);
        c.setInterpolation(40, 40);
    } else if (chartIndex == 2) {
        // Rectangular wireframe of original data
        c.addTitle("5 x 5 Data Points\nRectangular Wireframe");
        c.setShadingMode(Chart.RectangularFrame);
    } else if (chartIndex == 3) {
        // Rectangular wireframe of original data spline interpolated to 40 x 40
        c.addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nRectangular Wireframe");
        c.setShadingMode(Chart.RectangularFrame);
        c.setInterpolation(40, 40);
    } else if (chartIndex == 4) {
        // Triangular wireframe of original data
        c.addTitle("5 x 5 Data Points\nTriangular Wireframe");
        c.setShadingMode(Chart.TriangularFrame);
    } else {
        // Triangular wireframe of original data spline interpolated to 40 x 40
        c.addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nTriangular Wireframe");
        c.setShadingMode(Chart.TriangularFrame);
        c.setInterpolation(40, 40);
    }

    // Set the center of the plot region at (200, 170), and set width x depth x height to 200 x 200
    // x 150 pixels
    c.setPlotRegion(200, 170, 200, 200, 150);

    // Set the plot region wall thichness to 5 pixels
    c.setWallThickness(5);

    // Set the elevation and rotation angles to 20 and 30 degrees
    c.setViewAngle(20, 30);

    // Set the data to use to plot the chart
    c.setData(dataX, dataY, dataZ);

    // Output the chart
    viewer.setChart(c, Chart.SVG);
}
%&gt;
&lt;%
// This example includes 6 charts
WebChartViewer[] viewers = new WebChartViewer[6];
for (int i = 0; i &lt; viewers.length; ++i) {
    viewers[i] = new WebChartViewer(request, "chart" + i);
    createChart(viewers[i], i);
}
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Surface Wireframe&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Surface Wireframe
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here are the chart images ****** --&gt;
    &lt;%
        for (int i = 0; i &lt; viewers.length; ++i) {
            out.write(viewers[i].renderHTML(response));
            out.write(" ");
        }
    %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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